/Engine/Plugins/Animation/ControlRig/Source/ControlRig/Public/Rigs/RigHierarchy.h
Filtered accessor to retrieve all element keys of a given type
template<typename T> [TArray](API\Runtime\Core\Containers\TArray)< [FRigElementKey](API\Plugins\ControlRig\Rigs\FRigElementKey) > GetKeysOfType ( bool bTraverse ) const